[zun] Transition Rocky to EM

This transition the rocky branch to extended maintenance.
Changes for bugfixes and things the team deems important are
still encouraged, but there will no longer be official releases
off of the branch.

Please +1 if the team is ready for us to proceed with this
transition, or -1 if there are any final backports currently in
flight that we should wait for. For the latter case, please
update the patch with the new commit hash after doing a final
release to get those changes out so we know to proceed with the
transition.

Change-Id: I808d47cb87d99316c8556aac0b024463cc8a9692

deliverables/rocky/python-zunclient.yaml

@@ -29,6 +29,10 @@ releases:
     projects:
       - repo: openstack/python-zunclient
         hash: 10cda2de665bed7ed9cc55b1c4d514a8a4c31528
+  - version: rocky-em
+    projects:
+      - repo: openstack/python-zunclient
+        hash: 10cda2de665bed7ed9cc55b1c4d514a8a4c31528
 branches:
   - name: stable/rocky
     location: 2.1.0

deliverables/rocky/zun-ui.yaml

@@ -8,6 +8,10 @@ releases:
     projects:
       - repo: openstack/zun-ui
         hash: 7eb1e0b5dce3c34906cf3f0c048b6b703d3a8fb0
+  - version: rocky-em
+    projects:
+      - repo: openstack/zun-ui
+        hash: 7eb1e0b5dce3c34906cf3f0c048b6b703d3a8fb0
 branches:
   - name: stable/rocky
     location: 2.0.0

deliverables/rocky/zun.yaml

@@ -12,6 +12,10 @@ releases:
     projects:
       - repo: openstack/zun
         hash: c3418885fa7d13a1f4f6da247b3c973247dd75a2
+  - version: rocky-em
+    projects:
+      - repo: openstack/zun
+        hash: c3418885fa7d13a1f4f6da247b3c973247dd75a2
 branches:
   - name: stable/rocky
     location: 2.1.0